I would strongly recommend its effectiveness for students.
I am the curriculum coordinator at a senior special education setting for 80 students. They have intellectual disabilities ranging from mild to severe. We have been using the Online Resources successfully with most of the range of students we have to develop their maths and literacy skills. We are using the resources for class work on the interactive whiteboard, individual work on laptops and to generate worksheets. The activities are extremely motivating and engaging. I would strongly recommend its effectiveness for students with or without learning problems.